⬢ Bouncer by naptown labs Get started
AI spam filter · API

Spam stops here.
Real users don't.

Bouncer scores every form submission on your server — catching disposable emails, bot patterns, and promo spam — and blocks the bad ones before they reach your inbox. One API call, no CAPTCHA.

Get started free $ see pricing →

⬢ 500 checks/mo free · no card · under 100ms per check

A glowing indigo shield deflecting incoming spam — Bouncer screens every submission at the door.
no CAPTCHA

CAPTCHAs punish real users and wave sophisticated bots right through.

Bouncer scores every submission server-side, flags disposable emails and bot patterns, and blocks the bad ones before they hit your inbox. Keep the form clean without a "prove you're human" hurdle — drop in one API call and keep your conversion rate.

One request, one verdict

POST your form fields. Get a score back in 38ms.

POST /v1/checkreq_7f3a1c
name"buy cheap meds online"
email"[email protected]"
message"Click here for great offer!!!"
0.97spam score
blocked
disposable_email promotional_language bot_pattern latency 38ms
What you get

Bot protection your users never see.

No CAPTCHAs
Invisible to real users — scoring happens server-side in your form handler.
A real spam score
A 0.0–1.0 confidence score with named signals. Set your own block threshold.
Disposable email detection
Catches temp-mail domains and known throwaway providers automatically.
Webhook alerts
Pipe high-confidence blocks to Slack or Discord the moment they happen.
One API call
POST your form fields, get a verdict in under 100ms. No SDK to install.
Submission log
Every check stored with its score and signals, reviewable from your dashboard.
Pricing

Free to start. Scales by the check.

Free
$0
500 checks/mo · spam scoring · submission log
Start free
Starter
$9 /mo
5,000 checks/mo · webhook alerts · disposable email detection
Get Starter
Most popular
Pro
$19 /mo
25,000 checks/mo · priority support · custom signal rules
Get Pro
Business
$29 /mo
Unlimited checks · SLA · team seats · dedicated onboarding
Contact us
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